Lamp



hillsid id CLARENSE GIL-CHRIST, GE TOLEDO, OHIO, ASSIGNDR TO ELECTRICAUTO-LITE CGBZPORAEXQN, F TQLEDO, QEIO, A COREOBATION OF DELAWARE.

Laser,

application filed. August 11, 1919. Serial No. 318,726.

To all w/lom. it ma 'comcv'n:

Be it known tnat l, Unenmtcn F. GIL- CHRIST, a citizen of the UnitedStates, residing at Toledo, in the county of Lucas and b'tatc of Jhio,have invented certain new and useful improvements in Lamps, of which ideclare the following to be a full, clear, and exact description.

This invention relates to lamps, particu larly to those adapted "for useas headlights, sidelights -:l spotlights for vehicles.

An object of the invention is to provide a lamp of this character whosestructure shall be simple, strong, dust and water tight, shall present.:rpleasing appearance and shall be such that parts will not. rattle orbecome loose when the lamp is mounted upon a vehicle to severevibrations.

A further object is the provision in such a lamp of means whereby thelens covering the front. of the lamp may be readily removed to giveaccess to the reflector and to the lamp rorming the source of light.

Further objects of this invention relate to economies of manufactureanddetails of construction as will hereinafter appear from the detaileddescription to follow. I accomplish'tlie objects of my invention incertain instances by the devices and means described in the followingspecification, but it is evi-- 'dent that the same may be varied widelywithout departing from the scope of theinvention, as pointed out in theappended claims. Structures constituting certain embodinient-s of myinvention, any one of which may be preferred, are illustrated in theaccompanying drawings forming a part hereof, which:

Figure l is a front view of the lamp; comprising the invention.

Fig. ll. is a cross sectional view or" the same taken ornthe line Il-lllof Fig. I.

Fig. HE is a fragmentary cross sectional view on an enlarged scale,taken on the line ill--Hl of Fig. I.

Fig. IV is a front view similar to l or a modified form.

V is a cross sectional view taken on the line VV of Fig. 1V.

Fig. VI is a fragmentary cross sectional view on an enlarged scale,taken on the line fl-Yip"? Fig. IV.

Fig. (H is an enlarged detail view of the connector tube.

otherwise suitably fastened together.

4 In the drawings, similar reference numorals refer to similar partsthroughout the several views, and the sectional views are talten lookingin the direction of the arrows at the ends of the section lines.

A casing or body portion at shown as paraboloidal in form and supportedby brackets 5 has a cylindrical portion 6 at its mouth. lVithin andsecured to this cylindrical portion is a ring 7 having an inwardlyextending radial flange 8, against which rests a refiector 9 shown alsoof paraboloidal form. The reflector 9 has an outwardly extending radialflange 10 adapted to overlap the flange 8 of the ring 7, and betweenthese two flanges is a ring 11 of suitable packing material for thepurpose of preventing the entrance o'fdust, dirt and water. This ring 11may for convenience be permanently attached to the flange 8. The casinga and the reflector 9 are each provided with a circular aperture attheir central portions for receiving a tubular connector 12 having atone end a flange 13 adapted to engage the front surface of the reflectorand at the other end a ring 14 threaded thereon and adapted to engagethe outer surface of the casing 4. By means, of this arrangement thereflector is detachaioly secured to the casing, and by turning; up thethreaded ring 14 may be firmly held against the packing 11. Theconnector 12 constitutes an outer casing of a focusin lamp socket 18 oneend of which is adapts to receive an incandescent electric lamp. .16,while the opposite end carries the focusing screw 17. A suitable lead 19extends from a plug socket 20 mounted in the casing 4: to the focusinglamp socket 18 and a second lead 21 extends from the plug socket. 20 toan auxiliary lamp socket 22 mounted in the reflector and carrying anauxiliary lamp 23.

A lens 25 covers the opening or mouth of the reflector and is held inposition by a detachable lens ring 26, suitable rings 27 and 28 ofpacking material being employed respectively between the reflector andthe lens and between the len and the lens ring. The lens ring 26 isconstructed of two separate rings 30 and 31 soldered, brazed or Theinnermost ring 30 is of circular conformation so a to snugly fit overthe cylindrical part 6 of the casing at. The outer ring 3],

the shape illustrated by is shown as having an irre lar1 contour of Thelens ring, according to this invention, is secured to the hous' b meansof a pair of bolts or screws 34. eferring to Fig. HI it will be seenthat the ring 7 is provided in its flange portion 8 with a nut 33, asimilar not being located on the opposite side of the lamp, which nut isadapted to receiye the securing screw or bolt 3d shown in this case ashaving a hexagon head This nut 33 is constructed with a portion35 ofreduced diameter which in assembling the ap-' paratus i placed in asuitable opening in the flange 8 and afterward headed'or' spun over tofirmly secure the nut-in place and against rotation. The screw 34. isgiven a pointed end to facilitate its entrance into the nut and adjacentthe head is constructed with a portion 36 of reduced diameter-. Theouter ring 31 is provided with a threaded opening to receive the screw34 or if preferred, a plain opening may be made, large enough to pas thethreaded portion of the screw and after the screw has been inserted, maybe partially closed to prevent removal of the screw. y the abovedescribed arrangement it will be seen that the lens ring is attached tothe casing by the simple expedient of two screws, which when tightenedclamp the casing, the reflector, the lens and the lens ring firmlytogether and when loosened and the rim removed are retained y the ring.When it is desired to replace a broken lens or to renew a lamp globe thetwo screws 84. are loosened, and the lens ring is slipped off the casingthe screws being retained by the ringto avoid loss. Suitable openings 38and 39 are provided in the lens ring to permit the draining of any Waterthat may find its way into the casing.

According to the modification illustrated by Figs. IV, V and VI, thecasing 4', the reflector 9 and the securing means 12' iherefor areidentical with the corresponding parts of the structure just described.In this case, however, the lens ring comprises a single member 1-0having one portion 41 adapted to snugly fit the casing 4: and havinganother portion 42 extending radially inward, of substantially circularoutline and holding the lens 25 in proper position against the reflectorand easing. In this modification four countersunk screws M are employedwhich screws engage four nuts acspaa 33' similar in all respects to thenuts 33 of the previously described form.

Having thus described my invention,.

a portion adjacent its head of reduced (ii-- ameter and said'lens ringhaving! an opening for said screw of less diameeer than the threadedportion thereof,

}:2.In a device of the class described, the combination or a casing, aring having a radial flange secured to said cash 1g, a pinrality of nutsfastened tot-he flange of said ring, a reflector in said casing having aradial flange, packing between said flanges, a lens. a lens ring,packing on either sideof said lens, a plurality of screws for clampingsaid members in assembled position having threaded portions engagingsaid nuts and having portions of reduced diameter adjacent their heads,the lens ring having opening for said screws of less diarnerer thantheir threaded portions.

3. In a device or the class described, the combination of a casing", a'refiector therein having a flange for engaging saidv casing, meanscomprising a i nbular member arranged centrally of said reflector forholding the same in engageinent with'sa'id casing, a lens overlying saidreflector, a/iens ring therefor and crew threaded means engaging said.lens ring and casing, for clamping said lens ring, lens, reflector andcasing: firmly together-n- I 4:. In a device of the class described, thecombination of a casing having an inwardly extending flange adjacent itsmouth, a reflector having an outwardly extending flange overlapping saidfirst dange, screw threaded means at said flanges to'bind the sametogether, a tubular member for connecting said casing and said reflectorat their central portions, a light bulb socket carried by said tubularmember for moving said light bulb socket for focusing purposes.

n testimony whereof, ll my signaturc.

CLARE 1*? 'GELCHREST.

